Vipul's Razor is a distributed, collaborative, spam detection and filtering
network. The primary focus of the system is to identify and
disable an email spam before its injection and processing
is complete.

PerlPoint generates presentation slides, docs, brochures and more from an easy to learn but powerful text format. It allows distributed team documentation and can be extended to produce any target format you like.

Accounting software for small and medium-size businesses, developed for the european style of bookkeeping. EekBoek has both a versatile, scriptable command-line interface (CLI), a GUI, and a programmable API. NL: Boekhouden.

Implementations for encodings of Arabic, in Haskell and Perl. Support for ArabTeX, Buckwalter, UTF and other encodings. Interpretable notations generating original orthography and/or phonetic transcriptions.

The Introspector enables the programming tools that deal with source code such as the compiler to communicate in a standard and neutral manner reducing the accidental cost of programming. http://github.com/h4ck3rm1k3/

PerlMol is a collection of Perl modules for chemoinformatics and computational chemistry with the philosophy that "simple things should be simple". It should be possible to write one-liners that use this toolkit to do meaningful "molecular munging".

CryptoPy is a pure python implmentation of cryptographic algorithms and applications. The algorithms are developed for readability more than speed. The collection now includes IEEE 802.11i specific algorithms that generated the test vectors for 802.11i.

WWW::Myspace is a set of Perl modules and scripts that allow automated interaction with your Myspace.com account. The documentation includes many example scripts, and the distribution installs several scripts "out of the box".

Choose-OS (chos), is a modular and configurable boot loader for Linux/x86 - a program that is loaded by the BIOS before any operating systems. This program then lets you choose the operating system to boot and possibly enter parameters to it

XSH is a powerfull command-line XML editing tool/programming language
in the manner of Unix shell interpreters and line-oriented text editors
like ed which can be used either interactively or for batch-mode
XML processing.

A web page parser for sql written in java. It breaks html into table rows. It can datamine dynamic tables and alert a user to trends. It interfaces with authenticated & search sites. It is very flexible, uses selfmoding code, and can do http push

Abuild is a scalable build system that applies Object-Oriented principles to the build problem. It is powerful and flexible and helps ensure build integrity while simplifying the user's view of the build. A thorough user's manual is included.

Sausage Script is an internet scripting language aimed at CGI programming. It is fairly easy to use but has some of the weirdest syntax that you've probably never seen before. Perhaps it is time you try something new!